Crushing-machine.



N0. 69l,593. Patented Ian. 2|, I902. M. G. BUNNELL.

GRUSHING-MAGHINE.

(Application filed May f5, 1899.)

(No Model.)

2 Sheets-Sheet l.

v Patented .lan. 2|, I902.

M; G. BUNNELL. I cnusu'me MACHINE.

(Application filed May 5, 1899.)

2 Sheets-Sheet 2.

(No Model.)

9a prim @zu nz NITED STATES:

PATENT OFFICE.

MORTON G. BUNNELL, OF OHICAGO, ILLINOIS, ASSIGNOR TO FREDERICK O. I AUSTIN, OF CHICAGO, ILLINOIS.

CRUS'HING-MACHINE.

SPECIFICATION forming part of Letterslfatent N 0. 691,593, dated January 21, 1902. Application filed Mayo, 1899. Serial No. 715,714. No model.)

To all whom it may concern;

Be it known that I, MORTON G. BUNNELL, a citizen of the United States, residing at Ohicago, in the county of Cook, State of Illinois, have invented a certain new and useful-Improvement in Orushingrlvlachines, of which the following is a specification.

My invention relates more partig ularly to a construction of crushing-machine 'in which a movable crushing-jaw is supported by a pair of swinging links or hangers and in which the jaw thus adapted to cooperate with a'stationary jaw is operated by a suitably-actuated pitman.

Objects of my invention are to secure a better and more advantageous distribution of the strain; to reduce the strain upon the cast-iron portions of the machine to a minimum; to facilitate the adjusting of the machine with respect to the character of the material to be crushed and also for the purpose of changing or varying the size of the product; to provide a light, simple, compact, and highly-efficient crushing-machine and one capable of developing a maximum of crushing-power, and to provide certain details and features of construction tending to increase the serviceability and general efficiency of machines of this class.

To the attainment of the foregoing and other useful ends the pitman and movable jaw may be connected by an arm projectingfrom the back of the jaw, and the lower end of the pitman can be actuated by an eccentric, while its upper end is preferably connected with the forward portion of the crusher frame by means of a couple of swinging tension-rods. The movable crushing-jaw can be supported by a couple of swinging links or hangers, having their lower ends pivotally connected with the lower portion of said jaw and their upper ends pivoted to the crusher-frame, and with this arrangement the jaw will have a combined vibratory and bodily forward-andback movement and also a certain extent of up-and-down movement. Preferably the connection of the tension-rods with the crusherframe is such that the rods swing about an axis located forward of the stationary jaw, and the connection is also such that the rods may be adjusted longitudinally for the'purpose of adjusting the movable jaw toward or away from the stationary jaw and thereby changing orvarying the size of the product at will- The location of the axis about which the tension-rods swing may be such that the pull exerted by the rods is on a line midway between the top and bottom of the stationary jaw, so as to reduce the strain upon the crusher-frame, and, furthermore, with this arrangement the line of pull and the crushing-face of the stationary jaw can be substantiallyat right angles to each other. The length of the stroke of the movable jaw may be'varied by changing the point of connection between the tension-rods and the upper end of the pitman, and by so'doinga uniformly effective crushing action may be socured regardless of the character of the rock.

Other features of improvement are hereinafter more fully set forth. In the accompanying drawings, Figurel is a side elevation of a crushing-machine constructed in accordance with my invention. Fig. 2 is a section on line 0c 00 in Fig. 3. Fig. 3 is a plan of the machine shown in Fig. 1. Fig. ,4 is across-section on line y/y in Fig. 1. Fig. 5 is a similar. section on line'Z Z in Fig. 1. Fig. 6 is a detail view illustrating the manner of connecting the tension-rods with the crusher-frame.

The crusher-frame A can be of any suitable design or construction and may be mounted or supported upon timbers substantially in the manner shown in Figs. 1 and 2. A stationary jaw A. is secured to or made integral with the said frame and in conjunction with v a movable jaw B serves to provide a crushing-hopper for receiving the rock. The said movable jaw is preferably supported by a couple of swinging links or hangers E and is provided with a rearwardly-extendin g arm I). It will be observed that the said hangers are pivotally connected at their lower ends to the lower portion of the movable jaw, while their somewhat forward of their lower ends. The pitman O, which operates the movable jaw, is preferably actuated at its lower end by an ec-' centric, the shaft 1, upon which the cam is mounted, beingjournaled in bearings 2 on the upper ends are pivotedto the frame at points I bottom of the frame and the pitman having practically a pivotal or swinging connection with the movable jaw through the medium of the latters arm I). It will be seen, however, that the point of connection between the arm and pitman is at a point between the latters top and bottom and that the upper end of the pitman is connected with the forward portion of the frame by a couple of parallel and longitudinally-extending tension-rods D. With this arrangement the jaw 13 will have a combined vibratory and bodily forward-and-back movement and also a certain extent of bodily up-and-down movement. The tension-rods may have their rear ends connected to form a sort of yokeas, for instance, by constructing the yoke fromasingle rod bent into the desired form-and the upper end portion of the pitman can be provided with a plurality of bearing seats or grooves 0, adapted to receive and form a bearing for the eylindric portion D, which connects the rear ends of the rods.

The crusher-frame is preferably cast with i a couple of lugs or projections a. These lugs are provided with bores or openings through which the forward end portions of the tension-rods are extended, and the projecting ends of the rods can be threaded and provided with nuts (I. The openings or bores in the lugs may be tapered slightly, as shown in Fig. 6, to permit the rods to have the requisite amount of vertical swing, and each lug can be provided with a removable bearingblock at, having its face curved or otherwise adapted to provide a bearing upon which the interposed washer d may rock during the vibratory motion of the rods, and as a simple arrangement for preventing the blocks a from turning they may each be provided with l a reduced portion squared to tit a square socket or countersink in the lug, substantially as illustrated in Fig. 6. With this arrangement the upper end of the vibratory pitman will swing about an axis located forward of the stationary jaw, and by referring to Fig. 2 it will be seen that the pull exerted by the tension-rods upon the stationary jaw is on a line midway between the latters top and bottom, or, in other words, that the ten- 1 sion-rods pull from the center of the stationary jaw in a way to permit the rods to sustain the greater part of the strain, and thereby reduce the strain upon the crusher-frame to a minimum. It will also be observed that the direction of pull exerted by the rods can with such arrangement be substantially at right angles to the crushing-face of the stationary jaw and also to the links or hangers which support the movable jaw. The size of the product may be varied at will by simply rotating the nuts cl, so as to adjust the movable jaw toward or away from the stationary jaw, it being seen that the vibratory rods D, each of which swings or vibrates about an axis forward of the movable jaw, is adjustable longitudinally for the purpose of i varying the length of rod between the pitman t and the axis about which the rod vibrates.

The length of the stroke of the movable jaw may be varied according to the character of the rock by shifting the cross-piece D of the yoke from one to another of the notches c on the upper end of the pitman. In this way the machine is not only capable of readily producing any size of product, or, in other words, of crushing either fine or coarse, but is also capable of auniformly eifective crushing action regardless of the character of the rock. The nuts 01 may be rotated while the machine is running, and in this way the attendant may change the product without stopping the machine.

By arranging the pitman to extend upwardly from the eccentric the adjustment of the connection between the vibratory tension-rods and the pitman in a direction toward the axis of the eccentric serves to lower the tensionrods. Such adjustment, therefore, shortens up the leverage between the axis of the eccentric and the point of connection between the tension-rods and the pitman, and in thus dropping the tension-rods toward a plane belowthe movable crushing-jaw longitudinal adjustment of the tension-rods will be necessary to maintain the relative position of the pitman, or if such longitudinal adjustment of the tension-rods is not made then the pitman will be caused to assume a different position relatively to the movable crushingjaw. This variation in leverage and length of connecting-rods cannot, of course, be attained in the same way in a machine where the pitman extends downwardly, since in such case the downward adjustment of the tensionrods upon the pitman will lengthen the leverage and at the same time depress the tensionrods in a direction toward a plane below the movable jaw. The features of adjustment and arrangement herein involved are designed to cooperate with and affect the action of the movable crushing-jaw upon materials of different size and hardness and to vary the degree of fineness of the product and the rapidity or retardation of its discharge from the hopper.

What I claim as my invention is A crushing-machine comprising a rotary driving-shaft provided with an eccentric; a pitman arranged upon and extending upwardly from the eccentric, and actuated thereby; a vibratory crushing-jaw arranged forward of the pitman and supported by swinging links pivotally connected at their lower ends with the lower portion of the movable crushing-jaw, and having their upper ends pivotally supported upon the body-frame of the machine; a stationary crushing-jaw arranged opposite to and forward of the movable crushing-jaw and backed by the forward stationary part of the body-frame of the machine; a couple of vibratory tension-rods arranged as connections between the pitman and the stationary part of the body-frame and connected with the latter to swing about an axis forward of the movable jaw; means for adjusting the length of each rod. between said the latter at a point between the axis of the axis and the connection of the rod with the driving-shaft and the point of connection be- 10 pitman; means forpermitting the connection tween the tension-rods and the pitman. between the vibratory tension-rods and pit- 5 man to be adjusted toward and away from MORTON BUNNELL' the axis of the driving-shaft; and a power- Witnesses: transmitting arm arranged between the mov- ARTHUR F. DURAND, able jaw and the pitman and connecting with AGNES A. DEVINE. 

